Hello. One server has zabbix 5.0, nginx and mysql installed. I create a zabbix-doc folder in / usr / share / zabbix and put a pdf file there, for example -1.pdf. Checking - the link http: //zabbix/zabbix-doc/1.pdf opens the file 1.pdf. But if you select the "Url" widget in the dashboard and mark the above link there - "http: //zabbix/zabbix-doc/1.pdf", an empty widget appears, the 1.pdf file does not open, although in the zabbix 4.4 version. it opened. Moreover, I created a complex screen in zabbix, opened it, copied the link on which it opened and pasted the link into the "Url" widget - the complex screen was not displayed in the widget.